Title:
MULTILAYER COIL
Document Type and Number:
WIPO Patent Application WO/2007/040029
Kind Code:
A1
Abstract:
An open magnetic circuit type multilayer coil free from a structural defect such
as interlayer separation or cracking. On both major surfaces of a nonmagnetic
layer (13) are provided a layered body (10) where magnetic layers (11) are formed
and a coil (L) where coil conductors (15, 16) that are formed on the layered body
(10) and have a specified thickness are spirally interconnected. The coil conductor
(16), out of the coil conductors (15, 16) formed in the layered body (10), located
on the major surface of the nonmagnetic layer (13) has a small thickness that is
not greater than 0.6 times those of the magnetic layer (11) and the nonmagnetic
layer (13) but is greater than 0.1 times that of the coil conductor (15) not located
on the major surface of the nonmagnetic layer (13).
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Inventors:
TSUZUKI KEIICHI (JP)
Application Number:
PCT/JP2006/318266
Publication Date:
April 12, 2007
Filing Date:
September 14, 2006
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
TSUZUKI KEIICHI (JP)
TSUZUKI KEIICHI (JP)
International Classes:
H01F27/28; H01F17/00
Foreign References:
JPH1197256A | 1999-04-09 | |||
JP2001217126A | 2001-08-10 |
Attorney, Agent or Firm:
MORISHITA, Takekazu et al. (2-18 Minamihommachi 4-chome, Chuo-ku, Osaka-sh, Osaka 54, JP)
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